The architecture profession, much like the design and construction industry at large, is one built on strong relationships and professional connections. According to the 2018 AIA Firm Survey Report, included in the 71 percent of billings that come from repeat clients are 43 percent that come from clients without a competitive selection. The affinity between client and architect is even stronger in firms doing commercial work, where 56 percent of billings come from clients under noncompetitive selection, and three-quarters from repeat clients.